h2_conn.h File Reference

HTTP/2 connection + stream engine (RFC 9113) over the HPACK + frame layers. More...

#include "ServerConfig.h"

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Detailed Description

HTTP/2 connection + stream engine (RFC 9113) over the HPACK + frame layers.

One H2Conn drives a single HTTP/2 connection: it consumes the client connection preface, the SETTINGS exchange, and the frame stream; reassembles each request's header block (HEADERS + CONTINUATION) and HPACK-decodes it; tracks per-stream state and connection / stream flow control; and answers control frames (SETTINGS ACK, PING ACK, WINDOW_UPDATE). Decoded requests and body data are handed to the application through callbacks, and h2_conn_respond() serializes a response as HEADERS + DATA frames. Outbound bytes go through a caller-supplied writer, so the engine has no transport dependency and is host-testable by feeding it a byte stream.

Fixed storage, no heap: one frame-reassembly buffer, one header-block buffer, an HPACK decoder table, and a small stream table per connection (sizes from DETWS_H2_*).

Author

Douglas Quigg (dstroy0)

Date

2026

Definition in file h2_conn.h.